A variety of codes and technical standards (See 12, Standards) may affect the configuration and construction of a specific propane system. The type of vaporizer and gas-air mixer selected can also affect the basic layout, as can other activities at the site. |
In the U.S., the National Fire Protection Association publication NFPA 58, Liquefied Petroleum Gas Code, represents a common minimum standard for commercial and industrial LP-gas installations. (Note: NFPA 59 addresses LP-Gases at Utility Gas Plants.) (See also: 12, Standards.)
Minimum distances are required between LPG systems and various exposures.
For storage containers (tanks), minimum separations are needed from other tanks, important buildings, adjoining property which may be built upon (See e.g., NFPA 58, Table 3-2.2.2) and from other exposures.
NFPA 58 Table 3-2.2.2 (Partial Data, 2001 Ed.)
| |
Minimum Distances |
| |
feet (meters) |
Water Capacity per
Container (Gallons) |
Mounded or
Underground
Containers |
Aboveground
Containers |
501
2,001
30,001
70,001
90,001
120,001
|
to
to
to
to
to
to
|
2,000
30,000
70,000
90,000
120,000
200,000
|
10 (30)
50 (15)
50 (15)
50 (15)
50 (15)
50 (15)
|
25 (7.6)
50 (15)
75 (23)
100 (30)
125 (38)
200 (61)
|
Propane vaporizers and most fuel transfer stations (truck or rail delivery) also require separation from each other and from other exposures, including storage tanks, buildings and property lines.
Review of a proposed LPG facility by state and local agencies is often required. Guidelines have also been developed by insurers such as Factory Mutual and Industrial Risk Insurers / GE-GAP.
If other uses of propane are likely at a site (e.g., forklift or vehicle fuel), requirements should be evaluated in initial plant design.
Where appropriate, future expansion of either the standby system or the consuming plant should be investigated.
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